The fight was basically over until the one girl grabbed the shovel. And then the other turned and ran to avoid getting hit. She was in retreat, back turned when the girl launched the shovel at her.
I saw the girl in the pink shirt refuse to leave the property, and then follow the other girl around until that other girl grabbed a shovel. My thought was that if it had been a gun instead of a shovel, the NRA would have been all over the defense of the person who did the damage.